Deep in a tropical Ecuadorean Andes forest shrouded in darkness and mist, a future Case Western Reserve doctoral student and her biologist husband made an intriguing discovery: a nickel-sized frog ...

But frogs may yet hold clues to killing pain. At least one frog does deploy an opioid: the waxy monkey tree frog (Phyllomedusa sauvagii), whose skin is laced with the peptide dermorphin. Although the ...